Maybe the menu bar also fails.
Sorry to see you've run into an issue after upgrading to 7.2.
However, I have personally tested the 7.1 > 7.2 upgrade with German translations and cannot replicate this issue.
In order to investigate further can you please;
1. Roll back your instance to 7.1
This would entail restoring your YF DB back to how it was prior to the upgrade, and also the YF folder itself.
If you need some more detailed info on this, please let me know.
2. Email email@example.com and reference this post, so I can create a support case and set you up with FTP access.
Then you can upload your YF DB to our FTP site, and I can perform the upgrade with your DB to replicate the issue and then pass to the devs.
Also in future, if you run into any errors, can you please send these through to firstname.lastname@example.org, as it will be given a support case # and handled via the appropriate channels.
Please let me know if you have any questions on this.
I have made a rollback and open a request.